"An object named IIS_IUSRS could not be found" when adding a user to the PHP iis 8 session directory

Question

I am running a Windows 2012 R2 server running under IIS 8. New to the entire Windows server environment.

To install PHP, I follow the tutorial below

Install and configure PHP

In the part of his description, in order to correctly use the functionality of the PHP session, I need to create a new "sessions" folder and add it to the "IIS_IUSRS" folder.

However, when I enter the "Object files" field, it gives me the error "Object with name IIS_IUSRS not found."

So far I have referred to the following, but none of them have been useful

Attempted to add IIS_IUSRS to the Administrators group [closed]

IIS or IIS_IUSRS so that PHP can write files for WordPress

Group IIS_IUSRS is missing

How to grant folder permission for an IIS user in C #?

IIS_IUSRS and IUSR Permissions in IIS8

Research was carried out for several hours, but could not find anything concrete.